[Form 4] Aclaris Therapeutics, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Aclaris Therapeutics Chief Financial Officer Kevin Balthaser reported equity compensation-related transactions on March 1, 2026. He exercised 2,375 Restricted Stock Units, which converted into 2,375 shares of common stock at a price of $0.0000 per share. Each restricted stock unit represents a contingent right to receive one share of common stock of the company.

To cover tax withholding obligations tied to the vesting and settlement of these units, 677 shares of common stock were withheld and disposed of at $2.87 per share, as indicated by transaction code F for tax-withholding disposition. After these transactions, Balthaser directly owned 187,453 shares of common stock.

Insider Trade Summary

2,375 shares exercised/converted

Mixed 3 txns

Insider Balthaser Kevin

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	2,375	$0.00	--
Exercise	Common Stock	2,375	$0.00	--
Tax Withholding	Common Stock	677	$2.87	$2K

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct); Common Stock — 188,130 shares (Direct)

Footnotes (1)

1. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer. The transaction reported represents the withholding of shares by the issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of restricted stock units described in this Form 4. The shares underlying these restricted stock units vest in four equal annual installments beginning on March 1, 2023, subject to the Continuous Service of the Reporting Person (as defined in the Plan) as of the applicable vesting date.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Balthaser Kevin

(Last) (First) (Middle)

C/O ACLARIS THERAPEUTICS, INC.

701 LEE ROAD, SUITE 103

(Street)

WAYNE PA 19087

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Aclaris Therapeutics, Inc. [ ACRS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/01/2026		M		2,375	A	(1)	188,130	D
Common Stock	03/01/2026		F(2)		677	D	$2.87	187,453	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/01/2026		M			2,375	(3)	(3)	Common Stock	2,375	$0	0	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer.

2. The transaction reported represents the withholding of shares by the issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of restricted stock units described in this Form 4.

3. The shares underlying these restricted stock units vest in four equal annual installments beginning on March 1, 2023, subject to the Continuous Service of the Reporting Person (as defined in the Plan) as of the applicable vesting date.

	/s/ Matthew Rothman, Attorney-in-Fact	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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